Under the top 2cm all looked normal, so being as the shops had closed decided to plug on.
It needed a lot more sloshing about than normal as it seemed to be clumping a bit but a bit of elbow grease eventually got rid of it.
One medium spraymalt well stirred in and now it seems to be producing a head and gas normally.
The kit had a 2011 expirey date on it so that shouldn't be a prob and there were no signs of damage, or leaks to the can.
I just haven't seen this crudge on the top of the malt before. Will report back on the outcome.
Bottoms up!
